0 Replies Latest reply on Jul 14, 2011 11:13 AM by smatovic

    Zeta OpenCL Chess

      v 0.915 Developer Release


      i published the Source Code of Zeta, a Chess Programm running in OpenCL on a GPU, under GPL:

      for Nvidia Devices:

      and for AMD GPUs or Intel/AMD CPUs

      See my blog for more Information:

      Zeta is more a prototype than a real chess engine. It uses only one SIMD Unit of a GPU with 128 Threads,
      this is enough to achieve about 100 000 NPS, but still far away from that what a GPU is really able to compute, it is like using only 1 of 16 Cores.

      Zeta is written in OpenCL, so it is able to run on GPUs, CPUs, APUs.

      Zeta plays weak and buggy, a lot of well known chess techniques are not implemented.

      So, whats inside?

      - SPPS - a Simple Parallel Processing Scheme
      - Quad-Bitboard Board Representation (Thanks to Gerd Isenberg, http://chessprogramming.wikispaces.com/Quad-Bitboards)
      - Magic Bitboard Move Generator (Thanks to the Stockfish Team)
      - Tablebased Evaluation (Thanks to Tomasz Michniewski, http://chessprogramming.wikispaces.com/Simplified+evaluation+function)

      What's missing?

      - Castle Moves
      - En Passant Moves
      - AlphaBeta Pruning
      - Qsearch
      - SMP over mutlible SIMD Untis
      - All other well known techniques

      Supported Platforms?
      Until now only Linux with AMD OpenCL SDK or NVIDIA OpenCl SDK. No binaries.
      CPUs (>=SSE3) will also work with AMD OpenCL SDK.

      So feel free to contribute in GPU Chess :)

      Srdja Matovic